球阀说明书资料

摘要....................................................................... I ABSTRACT .................................................................. II 1 绪论 (1)

1.1球阀发展历史 (1)

1.2国内外研究现状 (1)

1.3本文研究的主要内容、方法和目标 (2)

2 球阀的结构设计及校核 (3)

2.1球阀的构成、作用原理、特点和结构分类 (3)

2.1.1球阀的构成 (3)

2.1.2球阀的作用原理 (3)

2.1.3球阀的特点 (3)

2.1.4球阀的结构类型 (4)

2.2球体的直径确定 (4)

2.3球体与阀座之间密封比压的确定 (5)

2.3.1必需比压的计算 (5)

2.3.2需用比压选择 (5)

2.3.3设计比压的计算 (6)

2.4球阀密封力的计算 (7)

2.5球阀的转矩计算 (8)

2.6阀体设计 (9)

2.6.1阀体结构形式、连接形式、结构长度和材料的确定 (9)

2.6.2阀体壁厚的确定 (10)

2.6.3 阀体法兰设计 (10)

2.6.4 阀体法兰校核 (11)

2.7阀杆的设计和校核 (14)

2.7.1 阀杆材料选择 (14)

2.7.2 阀杆填料的选择、填料摩擦力及摩擦转矩的计算 (15)

2.7.3 阀杆强度的计算 (16)

2.8阀杆连接件的强度计算 (18)

2.9球体的设计和校核 (20)

2.10球阀的阀座设计 (21)

2.11省力机构的设计和校核 (22)

2.11.1蜗轮蜗杆的设计 (23)

2.11.2蜗轮蜗杆的强度校核 (23)

3 ANSYS软件分析 (24)

3.1ANSYS软件的应用和介绍 (24)

3.2模型的导入和分析 (26)

3.2.1 模型的简化、导入和分析准备 (26)

3.2.2 模型的材料定义 (27)

3.2.3 模型的加载和边界条件的确定 (28)

3.2.4 模型的加载后分析结果 (29)

3.2.5 ANSYS结果分析 (33)

结论 (34)

参考文献 (35)

致谢 (36)

摘要

本文根据已知的球阀设计经验对DN为250mm，设计压力为2Mpa的球阀进行设计，主要包括了材料选择、结构设计和强度校核等，在结构和材料方面在满足强度的前提下，尽量降低结构的复杂性，以更小的消耗、更简单的结构来实现成品的设计优化，同时对球阀的主要部件进行应力的软件分析。省力机构作为设计任务的一部分，我们需要根据球阀的特点来选择合适的机构。

本设计以已给的设计条件为着眼点，同时根据国家阀门标准为中心，借助soliderworks三维软件、AUTOCAD二维制图软件和ANSYS分析软件根据球阀设计手册的标准框架的结构形式对产品进行了三维建模、二维制图和应力分析，最终确定球阀的结构形式和省力开启方式，这对以后设计与研究同类球阀具有一定的参考价值。

关键词：结构设计、强度校核、应力分析、省力机构

Abstract

This article according to the known ball valve design experience to DN is 250mm, the design pressure is the 2Mpa ball valve carries on the design, mainly has included the choice of material, the structural design and the intensity examination and so on。In the structure and material aspect in satisfying under the intensity premise, reduce the structure as far as possible the complexity, by a smaller consumption, a simpler structure realizes the end product design optimization, simultaneously carries on the stress to ball valve's major component the software analysis. The province strength organization does for a task of design part, we need to choose the appropriate organization according to ball valve's characteristic.

This design takes the given design conditions as the objective point, simultaneously according to the national valve standard is the center, with the aid of the soliderworks three dimensional software and AUTOCAD two-dimensional charting software and ANSYS analysis software has carried on the three dimensional modelling, the two-dimensional charting and stress analysis according to the ball valve design handbook's standard frame's structural style to the product, finally determined that ball valve's structural style and province strength opening way, this will have certain reference value to the later design and research similar ball valve. Key words：Structural design, intensity examination, stress analysis and reducing effort organization